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# Copyright 2011-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
# http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
# ANY KIND, either express or implied. See the License for the specific
# language governing permissions and limitations under the License.
module AWS
class EC2
# @api private
module BlockDeviceMappings
# @api private
private
def translate_block_device_mappings(mapping)
raise ArgumentError.new("block_device_mappings must be a hash") unless
mapping.kind_of?(Hash)
mapping.map do |device, dest|
raise ArgumentError.new("keys of block_device_mappings must be strings") unless
device.kind_of?(String)
entry = { :device_name => device }
case dest
when :no_device
# for some reason EC2 rejects boolean values for this seemingly boolean option
entry[:no_device] = ""
when Symbol
raise ArgumentError.new("unrecognized block device mapping: #{dest}")
when String
entry[:virtual_name] = dest
when Hash
if snapshot = dest.delete(:snapshot)
dest[:snapshot_id] = snapshot.id
end
entry[:ebs] = dest
else
raise ArgumentError.new("values of block_device_mappings must "+
"be strings, symbols, or hashes")
end
entry
end
end
end
end
end
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